GitLab

Fixed AXObject IndexInParent by retrieving the unignored parent since all children are unignored by default

R=dmazzoni@chromium.org, aboxhall@chromium.org

Change-Id: Ib8b391fd938eee6dc0b48fc08791dd01f68e7faf
Reviewed-on: https://chromium-review.googlesource.com/956298
Commit-Queue: Nektarios Paisios <nektar@chromium.org>
Reviewed-by: Dominic Mazzoni <dmazzoni@chromium.org>
Cr-Commit-Position: refs/heads/master@{#542627}